Acids and Bases Definitions

Question 1

Bronsted Acid

Answer 1

A proton donor

Question 2

Bronsted base

Answer 2

A proton acceptor

Question 3

Conjugate Base

Answer 3

The species left behind after a Bronsted acid has transferred its proton

Question 4

Conjugate Acid

Answer 4

The species left behind after a Bronsted base has accepted its proton

Question 5

Amphiprotic

Answer 5

A species that can both donate or accept electrons

Question 6

Polyprotic

Answer 6

Species that can donate more than one proton

Question 7

The strength of an acid depends on:

Answer 7

• charge of A
• electronegativity of A
• Strength of H-A bond
• extent of disassociation of charge on A-

Question 8

Equivalence point

Answer 8

Volume at which the reaction is just completed (pH changes most rapidly here)

Question 9

Buffer region

Answer 9

half way to equivalence point; pH=pKa

Question 10

Buffer solution

Answer 10

One whose pH changes much less than that of pure water as we add either acid or base

Question 11

Ka

Answer 11

acid dissociation constant (give example)

Question 12

Indicator

Answer 12

A substance that has different colours in acid and basic solution; usually a weak acid for which the acid and it conjugate base have different colours